A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7196893 | Anti-interference filter and lightning conductor device The anti-interference filter and lightning arrester device is equipped with two series-connected gas capsule diverters (6, 7). With the gas capsule diverters (6, 7) a switching configuration (9) is connected. This switching configuration (9 | 03/27/2007 |
| 6958583 | AC voltage control circuit The inventive control circuit 40 serves to render the output voltage to be the output value of any one of the outputs OUT1 to OUT5 when both the main power source A of the power saving device 100 and the control circuit's switch B are in ... | 10/25/2005 |
| 6788012 | Circuit for generating high voltage pulse A simple and less expensive high voltage pulse generating circuit including a low voltage direct current voltage source having one output terminal connected to another output terminal via a series circuit of a first switch with a low withstand voltage, an inductance... | 09/07/2004 |
| 5461345 | Frequency synchronous circuit for reducing transition period from power on state to stable state A frequency synchronous circuit has a first selection unit, a first counter unit, a second counter unit, a storage/average unit, and a comparison unit. The first selection unit is used to select one sampling signal from a first sampling signal having a fi... | 10/24/1995 |
| 5406177 | Gas discharge lamp ballast circuit with compact starting circuit In accordance with the invention, there is provided a ballast circuit for a gas discharge lamp. The circuit comprises means for providing a d.c. bus voltage on a bus conductor with respect to ground. The circuit includes a resonant load circuit incorporat... | 04/11/1995 |
| 4153861 | Electric discharge tube apparatus An electric discharge tube in which an electric luminous discharge is to be produced for display purposes has internal electrodes connected to a generator providing an alternating voltage of cyclically varying magnitude. At least one external electrode ex... | 05/08/1979 |